I've used it for hours and hours with little negatives. In the long run it will help save my shoulders, elbows, hands and more. In the short turn it allows me to work with more precision and longer. Worth every penny and i will buy the $1000 battery pack when it lands in the states...probably several.

For the homeowner with an oversized lot or country property it allows long runtime, decreased weight on parts of the body that can't handle it, true gas replacement by being able to run the big power power head unit .......I could go on.

Really an outstanding tool brought to us by the current number one in green handheld power tools.